I have 4 x Spektrum DS821 and 1 x JR DS821 digital servos that I wish to sell as a set. So the price listed is for all 5 and includes shipping via. USPS 3 day priority. They've been sitting for years, but I have tested them and they work great. If I'm remembering correctly they put out 88 oz. @ 6 volts. Arms and mounting screws are not included. Might as well let someone use them. Thanks for looking.